Power Steering Pump: Service and Repair

DISASSEMBLY AND ASSEMBLY

CAUTION: Never disassemble the terminal assembly. It cannot be reassembled.

ASSEMBLY SERVICE POINTS








]]A[[ O-RING INSTALLATION

]]B[[ OIL SEAL INSTALLATION





Use special tool MB991203 and MB990938 to install the oil seal.

]]C[[ CAM RING INSTALLATION

CAUTION: Be sure to install the cam ring in the correct direction as shown.





Install the cam ring as shown in the illustration.

INSPECTION
^ Check the flow control valve of the pump body for clogging.
^ Check the pulley and shaft for wear or damage.
^ Check the rotor and vane groove for "stepped" wear.
^ Check the contact surface of cam ring and vanes for "stepped" wear.
^ Check the vanes for damage.